Web API Jobs

I need an ASP.NET Web API that external partners can safely call to create, read, update, and delete transactional data. The service will sit in front of an existing external database, so the project covers building the endpoints and wiring them to that data source through Entity Framework (or another lightweight ORM if you can justify the choice). I’m interested in a clean REST-style design, proper HTTP status use, and solid exception handling so third-party developers can integrate without surprises. Key deliverables: • Fully functional ASP.NET Web API project targeting .NET 6 or later • CRUD endpoints for all transactional entities mapped to the external database • Token-based authentication and role-based authorization • Swagger / OpenAPI docs generat...

Project Overview Looking for an experienced full-stack developer to enhance and modernize a web platform for local service delivery. The system already runs on a Laravel base and requires improvements in design, payment automation, and geolocation tracking. The project includes: • Complete UI/UX redesign (responsive + PWA). • Stripe Connect & Billing integrations (split payments, subscriptions, and collaborative purchase approval). • AI diagnostic module integration (camera-based visual detection via FastAPI or external API). • Real-time tracking with Google Maps API. • Secure 2FA/KYC authentication and LGPD/GDPR-compliant data handling. • Full admin dashboard modernization with audit logs, analytics, and reporting. Preferred Technologies Laravel, Strip...

I already have a web application and I now need to embed full WOPI-based Word document editing inside it. Before we proceed to the full build I first want a concise technical plan that answers two concrete questions: • What exactly must be exposed in a WOPI host (metadata, discovery, proof-keys, etc.) so that Office Online will allow Word add-ins to run inside the embedded editor? • How can we structure multiple sub-domains (for example , ) so each of them is recognised as a valid WOPI source without breaking Office’s same-origin and CORS requirements? - Why ngrok works with wopi well and subdomain doesnt. Send me a short write-up covering the endpoints, headers, manifest tweaks, any required changes in the WOPI discovery XML, and the security considerations for the sub...

We're looking for a Backend Developer – .NET, 100% remote, European CET time Modernization Project within 3-6 months with ongoing support later, flexible working hours, part-time commitment is allowed You will be responsible for the core modernization and reliability of our internal testing application's backend. This system handles critical measurement data from electronic device validation. Your mission is to lead the technical upgrade from a legacy .NET system to .NET 4, and support the migration off the database from MSSQL to PostgreSQL, and build / extend the REST API to support a new, powerful frontend. Key Responsibilities: • Backend System Upgrade: Plan and execute the migration of the existing application backend from an older .NET version to .NET 4/4.8 (or .N...

I am looking for an experienced MatLab DevOps Engineer and Developer to design, develop, test, and maintain robust MatLab-based solutions. The ideal candidate will have strong expertise in Web APIs, CI/CD pipelines, and comprehensive testing strategies, as well as experience integrating and validating interactions between multiple applications. Key Responsibilities Develop and maintain MatLab applications and toolchains Design, implement, and maintain Web APIs for application integration Build and manage DevOps pipelines (CI/CD) for MatLab-based systems Implement and automate: Unit tests Regression tests Integration tests Automation testing frameworks Ensure seamless integration and data exchange between two or more applications Monitor, troubleshoot, and optimise system performance and...

Appear this error Error: call to URL failed with status 301, curl_error , curl_errno 0 Please contact shop administrator... My shop

I need a browser extension that lets me keep using the classic Adobe Acrobat ActiveX control to render online PDFs and AcroForms directly inside a modern tab, yet without falling back to IE11 mode, “IE Tab” or any similar workaround. To get around the WebExtensions sandbox I want the extension to hand off the PDF URL to a small native helper executable, launched through native-messaging, that embeds the ActiveX control and streams its window back into the tab (Chromium’s Native Host or Firefox’s counterpart will do the talking). Target browsers are Google Chrome, Microsoft Edge and, if technically feasible, Mozilla Firefox. A single code base with small per-browser tweaks is preferred. Operation flow • The user visits a URL that ends in .pdf or that the s...

First, I want the data layer to communicate with external accounting services through a REST-style API. The module should issue authenticated HTTP requests using only the methods I plan to expose—GET, POST and PUT—to push or pull records between the database and providers such as InFakt or Betterfly. I expect clean, asynchronous calls via HttpClient (or another modern .NET approach), clear error handling and concise helper classes that make future endpoint additions straightforward. Second, the system must generate invoice exports. When I select ‘Faktury’ in the UI, the code should collect the relevant rows and create XML files that fully respect the FA(3) KSeF structure. The output has to validate against the official XSD so that I can upload it to KSeF without ...